h1 {
    text-align: center;
    margin: 30px 0;
    font-size: 2.2rem;
    color: #1a237e;
    font-weight: 600;
    letter-spacing: 1px;
}

.form-container {
    margin: 20px 0;
    padding: 30px;
    background: linear-gradient(135deg, #1a237e 0%, #283593 100%);
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(26, 35, 126, 0.2);
    color: #ffffff;
}
.form-group {
    margin-bottom: 25px;
    display: flex;
    gap: 20px;
    flex-wrap: nowrap;
    align-items: center;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    min-height: 60px; /* 统一行高 */
}
.form-group label {
    min-width: 100px; /* 增大标签宽度统一对齐 */
    font-size: 1.1rem;
}
.form-group input, .form-group select {
    padding: 12px 16px;
    border: 2px solid #e8eaf6;
    border-radius: 8px;
    background: #ffffff;
    flex: 1;
    min-width: 200px;
    transition: all 0.3s ease;
}
.form-group input:focus, .form-group select:focus {
    border-color: #3f51b5;
    box-shadow: 0 0 0 3px rgba(63, 81, 181, 0.1);
}
.table-container {
    overflow-x: auto;
    padding: 15px;
    background: #f8f9fa;
    border-radius: 8px;
    margin-top: 20px;
}
#orderTable {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}
#orderTable th, #orderTable td {
    border: 1px solid #ddd;
    padding: 12px;
    text-align: center; /* 内容居中对齐 */
    min-width: 120px; /* 增加列宽统一度 */
    white-space: nowrap; /* 防止内容换行 */
}
#orderTable th {
    background: linear-gradient(180deg, #303f9f 0%, #283593 100%);
    color: #ffffff;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.8px;
}
button {
    padding: 12px 24px;
    background: linear-gradient(135deg, #3949ab 0%, #303f9f 100%);
    color: #ffffff;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 500;
    letter-spacing: 0.5px;
    transition: all 0.3s ease;
    margin: 0 5px; /* 按钮增加左右间距 */
}
button:hover {
    background: linear-gradient(135deg, #303f9f 0%, #283593 100%);
    box-shadow: 0 4px 16px rgba(48, 63, 159, 0.3);
    transform: translateY(-2px);
}
.delete-btn {
    background: linear-gradient(135deg, #d32f2f 0%, #b71c1c 100%);
}
.delete-btn:hover {
    background: linear-gradient(135deg, #b71c1c 0%, #9a0007 100%);
    box-shadow: 0 4px 16px rgba(183, 28, 28, 0.3);
}

/* 预览模态框样式 */
.preview-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    z-index: 1000;
}

.modal-content {
    position: relative;
    background: #ffffff;
    margin: 5% auto;
    padding: 20px;
    width: 80%;
    max-width: 1200px;
    height: 90%;
    border-radius: 8px;
    overflow: auto;
}

.close-btn {
    position: absolute;
    top: 10px;
    right: 20px;
    font-size: 30px;
    cursor: pointer;
    color: #333;
}

.preview-content {
    margin-top: 40px;
    width: 100%;
    height: calc(100% - 50px);
}

.preview-content img {
    width: 100%;
    height: auto;
}

.preview-content embed {
    width: 100%;
    height: 100%;
}

.preview-btn {
    padding: 8px 16px;
    margin-left: 10px;
    background: linear-gradient(135deg, #42a5f5 0%, #2196f3 100%);
}

@media (max-width: 768px) {
    .form-group {
        flex-wrap: wrap;
    }
    .form-group input, .form-group select {
        min-width: 100%;
    }
}